Roll up door



FIG. 1 is a right front perspective view of a roll up door which embodies our design;

FIG. 2 is a front view thereof;

FIG. 3 is an enlarged portion of a right side view thereof, the left side view being a mirror image thereof; and,

FIG. 4 is an enlarged portion of a cross sectional view thereof taken along lines 4—4 of FIG. 2.

The rear view thereof is unornamented.

The material in dotted lines forms no part of our design. 

The ornamental design for a roll up door, as shown and described. 